Steam iron



FIG. 1 is a front top perspective view showing our new design;

FIG. 2 is an enlarged scale side elevational view showing the side not shown in FIG. 1;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front end elevational view thereof;

FIG. 5 is a rear end elevational view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a steam iron, as shown. 